SELinux: clear parent death signal on SID transitions
Clear parent death signal on SID transitions to prevent unauthorized signaling between SIDs. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Eric Paris <eparis@parisplace.org> Signed-off-by: James Morris <jmorris@localhost.localdomain>
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@ -1907,6 +1907,9 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm)
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spin_unlock_irq(¤t->sighand->siglock);
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}
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/* Always clear parent death signal on SID transitions. */
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current->pdeath_signal = 0;
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/* Check whether the new SID can inherit resource limits
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from the old SID. If not, reset all soft limits to
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the lower of the current task's hard limit and the init
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